Special parts have become "layerless"

[Masibanda-CE]

I was in the drawing manager and selected 2 assembly drawings to open. Advance Steel crashed. Since then I have been unable to open the properties dialog box of special parts. Also, AFTER selecting a Special Part I can no longer open any other drawing, nor switch between drawing tabs. The properties panel shows no layer information for Special Parts as if they are not on a Layer.

Anyone have any ideas?

[Sebastian_Eiche]

could you upload a part of the model?

[Masibanda-CE]

Here's a partial containing the area you see in the screenshot ...

This behaviour is not isolated to one machine, it happens on everyone's workstation.

[Sebastian_Eiche · Accepted solution]

the dwg you send me seems to be purged...maybe this was the problem?

If I select the object and use "select similar" all part are selected. I put them on test layer and after this the properties and so on are working again.

Not sure how this occurs, but there's a step missing, this is not done by Advance Steel from my point of view.

[Masibanda-CE]

@Sebastian_Eiche  I tried running the "layer match" command and that just caused AS to stall. I was able to change the objects to another layer by using the drop-down from the Layers panel, and as you said everything returned to normal.

Yes, it was purged. I sent you "part of the model" and purged out everyting not pertinent.

I don't understand what you mean by "step missing", but I did find some old posts about objects not being on a layer:

https://forums.autodesk.com/t5/autocad-forum/objects-created-with-no-layer/td-p/6584743/page/3

[Sebastian_Eiche]

What i wanted to say with "step missing". 
We had to found out in which step this is happened. Is Advance crashing while yo're doing something? Or do start a drawing process and then this appears...something what could maybe occurs this problem